EP 2242060 A1 20101020 - METHOD AND APPARATUS FOR TREATING RADIOACTIVE NITRATE WASTE LIQUID
Title (en)
METHOD AND APPARATUS FOR TREATING RADIOACTIVE NITRATE WASTE LIQUID
Title (de)
VERFAHREN UND VORRICHTUNG ZUR BEARBEITUNG EINER RADIOAKTIVEN NITRATABFALLFLÜSSIGKEIT
Title (fr)
PROCÉDÉ ET APPAREIL POUR TRAITER UN LIQUIDE RÉSIDUAIRE NITRÉ RADIOACTIF
Publication
Application
Priority
- JP 2009052096 W 20090206
- JP 2008029555 A 20080208
Abstract (en)
To provide an apparatus for treating a radioactive nitrate waste liquid that includes a denitrification tank (12A) which accommodates active sludge that adsorbs or takes in the radioactive substance in a nitrate waste liquid (11) and in which an anaerobic microorganism that reduces the nitrate to nitrogen gas grows, and a reaeration tank (14) in which a denitrification-treated liquid (24) treated in the denitrification tank (12A) is aerated and mixed with active sludge. A pH adjuster (21), a carbon source (22), and nitrogen gas are supplied to the denitrification tank (12A) so as to separate a denitrified liquid into a solid content and the denitrification-treated liquid (24) by using a first solid-liquid separating film (25), and the denitrification-treated liquid (24) treated with the active sludge in the reaeration tank (14) is reaerated and separated into a solid content and a reaeration-treated liquid (27) by using a second solid-liquid separating film (28).
IPC 8 full level
C02F 3/12 (2006.01); C02F 3/28 (2006.01); C02F 3/30 (2006.01); G21F 9/06 (2006.01); G21F 9/18 (2006.01); C02F 1/66 (2006.01); C02F 3/34 (2006.01); C02F 101/00 (2006.01)
CPC (source: EP US)
C02F 3/1273 (2013.01 - EP US); C02F 3/2853 (2013.01 - EP US); C02F 3/302 (2013.01 - EP US); G21F 9/06 (2013.01 - EP US); G21F 9/18 (2013.01 - EP US); C02F 1/66 (2013.01 - EP US); C02F 3/1268 (2013.01 - EP US); C02F 3/34 (2013.01 - EP US); C02F 2101/006 (2013.01 - EP US); C02F 2209/04 (2013.01 - EP US); C02F 2209/06 (2013.01 - EP US); C02F 2209/38 (2013.01 - EP US); C02F 2305/06 (2013.01 - EP US); Y02W 10/10 (2015.05 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2242060 A1 20101020; EP 2242060 A4 20120704; EP 2242060 B1 20150708; JP 4774120 B2 20110914; JP WO2009099208 A1 20110526; US 2010258500 A1 20101014; US 8409438 B2 20130402; WO 2009099208 A1 20090813
DOCDB simple family (application)
EP 09708931 A 20090206; JP 2009052096 W 20090206; JP 2009552550 A 20090206; US 74331909 A 20090206